Graphophone.



PATENTED NOV. 1.3-, 1906.

HAMMER.

GRAPHOPHONE.

APPLICATION FILED DEO.30. 1905.

I I I I @nwnfoz 1% human JUSTIN J. HAMMER, OF RED BLUFF, CALIFORNEAL,

all

No. .eseper.

Specification. of Letters Patent.

Patented isov. is, woe.

Application filed. December 80,1905 Serial No. 283,96 I

Improvements in Graphophones, of which the following is a specification.

The invention relates to on improvement in graphophones comprehending specifically a means for intensifying the soundrepro cluced by the instrument. The main object of the present invention is the production of a sound-ho of a particular construction in the use of which the soundwaves are taken from each side the diaphragm, whereby to intensii the quantity and improve the quality of the sound The invention will he described in the fol lowing specification, reference being had particularly to the accompanying drawings, ill Which Figure 1 is a plain View showing a graphephone provided with my improved sound reproduce-r. Fig. 2 is an enlarged section on line 2 2 of Fig. i. Fig. 3 a section on line 3 3 of Fig. 2.

Referring to the crawiw' it will. he notes.

that my improved soim( -reprotlucer is do signed primarily for use in connection the graphophono, as 1, of the ordinary disk record, as 2.

The invention specifically comprehcntls a .l

type 'usih new and improved souncl-hox, hi 'h i shes in Fig. 3 and consists of duplicate rhslsiihe members 3, circuniferentialiy reduced on their approximate inc s to prcride rec. "in; 4 and centrally provided with the moose-- trica llyarrangei'i later-a llppri j cc tin g v a. 5. The face of each dish between. the slums 5 and the inner ethos of the recess .l: is ut away to provide on enlarged recess 3, said. recesses together forming the sounrl-chmw ber of the box.

I -The disks are secured together 7, passed through radiallpproject extending from each of the disle. signed to be transversely :alineti.

4 ol" said disks are designed to receive annhler strips oi suitable cleiieoing rim-ti rialHS, as rubber, between which the diephragm 9 of the sotmd-bcx is clamped in scour mg the llisks together.

The usual head 10 is secured centrally of the diaphragm, from which (leient'ls an arm 11, carrying the usual rcmovahle stylus E2, the arm projecting to one side of the diaphre m and passing through an opeiiing 13 formed in. one 0-: the sleeves 5. Duplicate horns 14 are used in connection. with the sound-box, the smaller end 15 of each of which is preferably of flexible material and of a size to snugly fit the sleeves 5 of the SO'llIlQl-lOOX, thst end 15 which fits under the sleeve formed With the perforation 13 being also providedwith an opening 16, designed to with the openings 13 to permit pztssige of the arm i1. As time constructed and arranged the soun i-weves occasioned by the movement oi the diaphragm will be taken. front: Tooth sides of said diaphragm and delivered simultaneously through the horns ii, therehy ma iially intensifying the quality of the sonn. leiiv'ereci. Furtherniiore, as the and sound-chambers 6 on each side of the diaphragm exactly duplicated in and construction, there will he no retertiing or reioUion of the sound-Waves on side of'tho diaphragm which not (inplic on the other, whereby the effect of the diaphragm. irle 'zal in both sound-- chtmihers, with the remit to materially i111" provethe quail; the some.

The lltlpllCttilLilOHl M ere proiemhiy sup-- 7, pivoteily c :g hinges co to the grep e horn to itoho iliudltlllfin to the on it amiss-h;

uqon a stud 38, with an. arm ll, fix

to ermine ii. A. so or o -i of. comprising. duplicate disks med withcootral lztterally-projecting sle each 0,. so id disks being formed with central rm er'raogerl to provide e sownt-i'hamlw a diaphragm secured heti. een llllil hel by the disks when connected, the sour;1lchamloer oi eech disk being iiltflk in all on each side oi the diaphragm, a horn ill'llil'ifitftl. for. connection with. each sleeve, and a s Hus-arm sm'zurciito the box and. projecting through an opening formed in one of the .ll(\"."-li'.

l. A. smuuhhox comprising duplicate disks :l'o rule-1 l v: i th centritllyetrraiiced la terclly-projevtin sleeves, each of said disks being circum'lcre itinlly reduced to provide a recess, and cmiti'aily reduced. to provide a soundchamher, the sound-chamber being of greater depth than the recess, saial. disks being adapted to secured h1 gether to register their re bars arranged respective y on. opposite'e id of the dmpbram'n, a sieeve project ng from am 5336x0552 Z211 siyrips'cffleiahihg material s'atek i fiche th disphfagm and projecting through an of the respective die ks, a diaphragm owning-formed in one of the sleeves. 1o as umed batweefa' saiv} strips; and difmi ilx g 'thf In testimony whereof 1 affix my signature sound chambers into (.111 Home sound-chzunin presence of two witnessesf I Y JUSTIN J. HAMMER.

Witnesses:

8mm: HAMMER, q H. H. HAMMER.

253* 21': commun icatmn with. the *ud a styiu Mmm securedmto 

